Home / 1,138,812.83-1,707,986.88-418,907.11

Finding the Fourth Proportional to 1,138,812.83, 1,707,986.88 and 418,907.11

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Solution

The fourth proportional to 1,138,812.83, 1,707,986.88 and 418,907.11 is: 628,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,812.83 : 1,707,986.88 = 418,907.11 : x
  2. Step 2: Convert to fraction form
    1,138,812.83/1,707,986.88 = 418,907.11/x
  3. Step 3: Cross multiply
    1,138,812.83x = 1,707,986.88 × 418,907.11
  4. Step 4: Simplify right side
    1,138,812.83x = 715,487,843,548.75
  5. Step 5: Solve for x
    x = 715,487,843,548.75/1,138,812.83
  6. Step 6: Final answer
    x = 628,275.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.